An alkylamide-substituted (-NHCOC10H21) hydrogen-bonded dibenzocrown-6 derivative (1) was prepared to stabilise the ionic channel structure in a discotic hexagonal columnar (Colh) liquid crystal. The introduction of simple M+X- salts such as Na+PF6- and K+I- into the ionic channel of 1 enhanced the ionic conductivity of the Colh phase of the M+·(1)·X- salts, with the highest ionic conductivity reaching ∼10-6 S cm-1 for K+·(1)·I- and Na+·(1)·PF6- at 460 K, which was approximately 5 orders of magnitude higher than that of 1. The introduction of non-ferroelectric 1 into the ferroelectric N,N′,N′′-tri(tetradecyl)-1,3,5-benzenetricarboxamide (3BC) elicited a ferroelectric response from the mixed Colh phase of (3BC)x(1)1-x with x = 0.9 and 0.8. The further doping of M+X- into the ferroelectric Colh phase of (3BC)0.9(1)0.1 enhanced the ferroelectric polarisation assisted by ion displacement in the half-filled ionic channel for the vacant dibenzocrown-6 of (3BC)0.9[(M+)0.5·(1)·(X-)0.5]0.1.
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